---
name: "nvme_underlying_ns_list-libnvme3"
section: "2"
platform: "linux"
package: "nvme-cli"
version: "3.2-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/nvme_underlying_ns_list-libnvme3"
---

# nvme\_underlying\_ns\_list-libnvme3(2)

Underlying Namespace List Data Structure (CNS 1Dh)

## NAME

struct nvme\_underlying\_ns\_list - Underlying Namespace List Data Structure (CNS 1Dh)

## SYNOPSIS

struct nvme\_underlying\_ns\_list {\
     **\_\_le64 genctr;**\
     **\_\_le16 nument;**\
     **\_\_u8 rsvd10\[6\];**\
     **struct nvme\_underlying\_ns\_entry entries\[NVME\_UNDERLYING\_NS\_LIST\_MAX\];**\
 };\

## Members

- genctr

  Generation Counter (GENCTR)

- nument

  Number Entries (NUMENT)

- rsvd10

  Reserved

- entries

  Underlying Namespace list, see *struct* *nvme\_underlying\_ns\_entry*. Reportable up to NVME\_UNDERLYING\_NS\_LIST\_MAX entries.